TQ or bolt stretch for Childs & Albert BBC rods
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TQ or bolt stretch for Childs & Albert BBC rods

  1. #1
    just a ski boat with bark Carnivalride's Avatar
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    Question TQ or bolt stretch for Childs & Albert BBC rods

    I'm trying to assemble an engine for a friend and he has some new Childs & Albert aluminum connecting rods but of course he doesn't have the literature that came with them. By any chance does anybody here have a torque specifiaction for these or a bolt stretch specification, these are BBC with 7/16-20 bolts. It seems as though Childs & Albert are no longer in business.


    Thanks,
    Loren

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    steelcomp was here
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    That's a tough one. Can you ID the bolts? How much power and what RPM are you shooting for? If no one can come up with a spec, you might try calling ARP to see if they supplied the bolts, and if so, what the spec is. Otherwise, there's no guessing what it might be.
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    Probably has C&A on the bolt. They did that. I'll look in the shop and see if I can find an old spec sheet.

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    Some guy obnoxious001's Avatar
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    You might try calling Akerly and Childs and ask if the still have the specs: http://www.akerlychilds.com/

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    gn7
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    With out the specs on the bolt, you are guessing. C&A used two bolts in their alum connecting rods. You are going to need to I.D. the bolt. There is something on the head, and you need to post that.



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    steelcomp was here
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    Quote Originally Posted by Fiat48 View Post
    Probably has C&A on the bolt. They did that. I'll look in the shop and see if I can find an old spec sheet.
    Figured as much...could have been made by ARP or SPS, but I think would say SPS and C&A if theirs.
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    just a ski boat with bark Carnivalride's Avatar
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    Thanks for the replies I'll look at the bolts again when I get home tonight and see what markings they have.

    Bob, if you have old spec sheets that would be great.

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    gn7
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    The vast majority of C&A rods used a 8740 bolt unless they were from their larger series rods. Alum rods just don't need a killer MP type bolt. Strongest bolt I have ever heard of being used in an alum rod was a ARP 2000, L19, or maybe a H-11



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    Here is what I have. I am assuming this is a BBC.

    150 series rods...all...bolt head marking CA-3000-1 85 ft lbs or .007-.008 stretch.
    That bolt is 1.850 long.

    They also made a deep cycle rod...you could get it in BBC but mainly it was a Chrysler 426 thing. That rod came with a c-a 3000-5 bolt and was 2 inches long. 90 ft lbs (.0075-.0085). Doubt you have those.

    Anyway...check the bolt number and the length.

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    gn7
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    Quote Originally Posted by Fiat48 View Post
    Here is what I have. I am assuming this is a BBC.

    150 series rods...all...bolt head marking CA-3000-1 85 ft lbs or .007-.008 stretch.
    That bolt is 1.850 long.

    They also made a deep cycle rod...you could get it in BBC but mainly it was a Chrysler 426 thing. That rod came with a c-a 3000-5 bolt and was 2 inches long. 90 ft lbs (.0075-.0085). Doubt you have those.

    Anyway...check the bolt number and the length.
    Unless of course, he bought them from somebody running a fueler



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    just a ski boat with bark Carnivalride's Avatar
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    Quote Originally Posted by Fiat48 View Post
    Here is what I have. I am assuming this is a BBC.

    150 series rods...all...bolt head marking CA-3000-1 85 ft lbs or .007-.008 stretch.
    That bolt is 1.850 long.

    They also made a deep cycle rod...you could get it in BBC but mainly it was a Chrysler 426 thing. That rod came with a c-a 3000-5 bolt and was 2 inches long. 90 ft lbs (.0075-.0085). Doubt you have those.

    Anyway...check the bolt number and the length.
    Bob,

    Of course mine are different, CA-4000-1 so do you have any specifications on those?

    Thanks,
    Loren

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    I show a c a 4000 which is 1.800 long. 75 lbs .0065-.0070
    I don't see a 4000-1

    But it says those bolts used in the 50 and 100 series rods (small block).

    That is the only bolt that is 1.800 long so maybe you can narrow down by that.
    Last edited by Fiat48; 11-16-2009 at 04:44 PM.

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    gn7
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    Just call these guys, ask for Rocky Childs. Tell him Mr Alberts told you to call. cause there sure as hell ain't no love lost there



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    Last edited by gn7; 11-17-2009 at 08:00 AM.

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    Here it is. Old rods. 1995 era
    C-A 4000-1 7/16-20 x 1.850 long 75 foot lbs. No stretch number given. Do not use Moly Lube.

    Or was this just a test to see who saves the oldest and most worthless information?

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